Heavy-duty automobile electric control silicone oil clutch fan calibration method

Abstract

The invention discloses a heavy-duty automobile electric control silicone oil clutch fan calibration method. The method comprises the following steps of 1, testing whether the water outlet temperatureof an engine exceeds the highest water outlet temperature allowed by engine design when the engine is under the limit load and a fan is at the limit rotating speed, and if so, replacing a fan with higher power; 2, recording the rotating speed corresponding to the fan when the water outlet temperature of the engine is maintained in the optimal use water temperature range under the conditions of constant rotating speed of the engine and different output powers of the engine; and 3, when a vehicle actually runs and the water temperature of the engine is changed within the optimal use water temperature range under the output power in the step 2, enabling the fan to run at the corresponding rotating speed measured in the step 2. On the premise of ensuring that the engine is not overheated under the limit load working condition, the engine under the common working condition of the whole vehicle is maintained within the optimal working water temperature, air temperature and engine oil temperature range, and meanwhile, the lowest working speed of the fan is ensured, so that the purposes of oil saving and noise reduction are achieved.

Description

technical field [0001] The invention belongs to the field of automobile heat dissipation, and relates to a method for calibrating a heavy-duty automobile electronically controlled silicon oil clutch fan. Background technique [0002] As an important controllable component of the engine cooling system, the electronically controlled silicon oil clutch fan is the main carrier of the development of automobile thermal management technology. The calibration logic of the electronically controlled silicon oil clutch fan has a huge impact on the performance of the vehicle, especially the fuel consumption and noise. The basic principle of fan calibration is to ensure that the vehicle can run at the lowest speed at any time without overheating, so as to achieve the purpose of saving fuel and reducing noise. [0003] Affected by the cooling system configuration of the vehicle, different engines are matched with different cooling systems, and the operation control requirements of the fan...

AI Technical Summary

Problems solved by technology

[0003] Affected by the cooling system configuration of the vehicle, different engines are matched with different cooling systems, and the operation control requirements of the fans are completely different throughout the life cycle of the vehicle. The minimum speed requirements of the fans are also different for vehicles with the same configuration, at different times, and on different driving routes. , it is very important to determine the operating speed of the fan reasonably, which not only meets the cooling requirements but also saves fuel and reduces noise. However, the usual fan calibration is based on theoretical calculations to give an approximate fan speed, and the vehicle is actually affected by external environmental conditions. There is a large discrepancy with the theoretical calculation

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